This product is available through: JRT Associates 5 Nepperhan Avenue, Suite 2B Elmsford, NY 10523 800-221-0111 451B Ion Chamber Survey Meter with Beta Slide Technical Data The 451B state-of-the-art ion chamber survey meter is a handheld battery operated unit designed for use in both rugged and normal environments. The 451B includes a sliding beta shield to serve as an equilibrium thickness for photon measurements and enables beta discrimination. The 451B has auto-ranging and measure radiation rate and accumulated dose from various radiation sources (beta, x-ray, gamma). The ion chamber detector allows for a fast response time to radiation from leakage, scatter beams, and pinholes. Additionally, the low-noise chamber bias supply provides for fast background-settling time. The digital display features an analog bar graph, 2.5 digital readout, low battery, and freeze (peak hold) mode indicators, and an automatic backlight function. User controls consist of an ON/OFF button and a MODE button. The case is constructed of lightweight, high strength materials and is sealed against moisture. The RS-232 interface can be connected directly to a computer for use with the Excel add-in for Windows (451EXL), enhancing the functionality of the instrument. This software allows for data retrieval, user parameter selection and provides a virtual instrument display with audible (requires sound card) and visual alarm indication. Key features • Measures skin dose (slide open) and deep dose (slide closed) • High sensitivity measurement of rate and dose simultaneously, with the capability to record peak rate • Auto-ranging and auto-zeroing • RS-232 communications interface with optional Windows-based Excel add-in for data logging • Ergonomic, anti-fatigue handle with replaceable grip, wrist strap and tripod mount • Programmable flashing LCD display and audible alarm • Easily-accessible battery door (operated by two 9-volt alkaline batteries) on the outside of the bottom case • Available with dose equivalent energy response (SI units) 451B Detector Ion chamber End users •x-ray manufacturers •state inspectors •government agencies •police and fire departments •emergency response and HAZMAT teams •nuclear medicine labs •hospital radiation safety officers •nuclear power workers Radiation detected beta, x-ray, gamma Specifications Radiation detected Alpha > 7.5 MeV Beta > 100 keV Gamma > 7 keV Operating ranges, response time 0 0 0 0 0 Accuracy Within 10 % of readings between 10 % and 100 % of full scale indication on any range, exclusive of energy response Detector Chamber (cc volume air ionization) 349 cc Chamber wall (phenolic) 246 mg/cm2 Chamber window (mylar) 6.6 mg/cm2 Beta slide 440 mg/cm2 Automatic features mR/h to 5 mR/h (8 sec) mR/h to 50 mR/h (2.5 sec) mR/h to 500 mR/h (2 sec) R/h to 5 R/h (2 sec) R/h to 50 R/h (2 sec) Auto-zeroing, auto-ranging, and auto-backlight Power requirements Two 9 V alkaline, 200 hours operation Warm-up time One minute Display LCD analog/ Analog digital with backlight Modes Environmental Typical energy dependence 100 element bar graph 6.4 cm long. Bar graph is divided into 5 major segments, each labeled with the appropriate value for the range of the instrument Digital 2.5 digit display is followed by a significant zero digit depending on the operating range of the instrument. The units of measurement are indicated on the display at all times. Digits are 6.4 mm (0.25 in) high. Low battery and freeze indicators are also provided on the display Integrate mode Operates continuously 30 seconds after the instrument has been turned on. Integration is performed even if the instrument is displaying in mR/h or R/h Freeze mode Will place a tick mark on the bar graph display to hold on the peak displayed value. The unit will continue to read and display current radiation values Temperature range -4 °F to 158 °F Relative humidity 0 % to 100 % (at 140 °F) Geotropism <1% Nitrogen gamma rays are 110 % to 120 % of indicated readings as determined at the University of Lowell 16 Dimensions (WxDxH) 10 cm x 20 cm x 15 cm (4 in x 8 in x 6 in) Weight 1.11 kg (2.5 lb) 2 Fluke Biomedical 451B Ion Chamber Survey Meter with Beta Slide 451B typical energy dependence Ordering Information 1.2 1.1 Models 1 Indicated/Actual 0.9 451B-RYR Ion Chamber Survey Meter with Beta Slide and standard chamber Side Slide - Closed 0.8 0.6 451B-DE-SI-RYR Ion Chamber Survey Meter with Beta Slide and dose equivalent chamber 0.5 Optional accessories Slide - Open 0.7 451EXL 451 Assistant for Excel, includes RS-232 interface cable 0.4 0.3 190HPS Single Unit Carrying Case 0.2 10 100 Effective (keV) 1000 10000 62-103 Check Source, 137 Cs, 10 µCi. Flat disc, 1-inch diameter 450UCS Check Source, 238 Uranium, 0.064 µCi, impregnated, 2 in x 2 in yellow card Fluke Biomedical. Better products. More choices. One company. About Fluke Biomedical Fluke Biomedical is the world’s leading manufacturer of quality biomedical test and simulation products. In addition, Fluke Biomedical provides the latest medical imaging and oncology quality-assurance solutions for regulatory compliance. Highly credentialed and equipped with a NVLAP Lab Code 200566-6 accredited laboratory, Fluke Biomedical also offers the best in quality and customer service for all your equipment calibration needs. Today, biomedical personnel must meet the increasing regulatory pressures, higher quality standards, and rapid technological growth, while performing their work faster and more efficiently than ever. Fluke Biomedical provides a diverse range of software and hardware tools to meet today’s challenges. Fluke Biomedical 6045 Cochran Road Cleveland, OH 44139-3303 U.S.A. Fluke Biomedical Europe Science Park Eindhoven 5110 5692EC Son, The Netherlands For more information, contact us: In the U.S.A. (800) 850-4608 or Fax (440) 349-2307 In Europe/M-East/Africa +31 40 267 5435 or Fax +31 40 267 5436 From other countries +1 (440) 248-9300 or Fax +1 (440) 349-2307 Email: email@example.com Web access: www.flukebiomedical.com Fluke Biomedical Regulatory Commitment As a medical test device manufacturer, we recognize and follow certain quality standards and certifications when developing our products. We are ISO 9001 and ISO 13485 medical device certified and our products are: • CE Certified, where required • NIST Traceable and Calibrated • UL, CSA, ETL Certified, where required • NRC Compliant, where required This product is available JRT Associates 3 Fluke Biomedical 451B Ion Chamber Survey Meter with Beta Slide through: 800-221-0111 ©2007-2010 Fluke Biomedical. Specifications subject to change without notice. Printed in U.S.A. 11/2010 3095534C D-EN-N Modification of this document is not permitted without written permission from Fluke Corporation.
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